What season does "like spring breeze, night comes, and ten thousand pears blow open" mean in ancient poetry?

Original sentence:

The north wind swept across the earth and messed up Pennisetum, and the weather in August will be covered with heavy snow.

Suddenly, like a night wind blowing, like a pear tree in blossom.

From: Song of Snow White Farewell to Mr. Wu's Homecoming by a great poet in the Tang Dynasty.

The north wind swept across the earth, breaking the white grass, and it snowed heavily in mid-autumn and August. The spring breeze seems to blow up overnight, and the trees are in full bloom like pear blossoms. Pear: It blooms in spring and the flowers are white. The metaphor here is that snowflakes pile up on branches, just like pear flowers.

Appreciation: This poem is very strange at the beginning. Flying snow spreads news before snow is the spirit of flying snow, and the so-called "pen is not swallowed up". Heavy snow will come with the wind, and the beauty of the word "the north wind rolls the ground" lies in seeing snow in the wind.

However, frost grass is brittle and can be broken (if it is spring grass, it cannot be "broken" when it is pitched with the wind). "White grass bends over" means that the wind is fierce again. It's crisp in August and autumn, and it's snowing in the north. The word "Eight In the snow" and "That is" vividly wrote the surprised tone of southerners.

Extended data:

The Creation Background of Song of Snow in Farewell to Tian Shuji Wu Going Home;

In the summer and autumn of Tianbao 13th year of Emperor Xuanzong of the Tang Dynasty (754), Cen Can was handed over to the Northern Dynasty, and returned to the East at the turn of spring and summer in the second year of Tang Suzong to Germany (757). This poem is regarded as this period.

At that time, there were frequent wars in the northwest frontier. With the ambition to contribute to the Great Wall, Cen Can went to the frontier twice and worked in the border guards for six years. Therefore, he has long observed and experienced the life of pommel horse and the ice and snow scenery outside the Great Wall.

In the thirteenth year of Tianbao, this is the second time to go to the frontier fortress. I served as the judge of Feng Changqing in the Northwest Courtyard (the subordinate of my envoy), and Wu's judge was his predecessor. The poet wrote this poem to send him back to Beijing (Chang 'an) on the podium.

Baidu Encyclopedia-A Song "Snow White Farewell to the Field"-Clerk Wu went home